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DE2919534C2 - Bolt guide for a floating caliper partial pad disc brake - Google Patents

Bolt guide for a floating caliper partial pad disc brake

Info

Publication number
DE2919534C2
DE2919534C2 DE2919534A DE2919534A DE2919534C2 DE 2919534 C2 DE2919534 C2 DE 2919534C2 DE 2919534 A DE2919534 A DE 2919534A DE 2919534 A DE2919534 A DE 2919534A DE 2919534 C2 DE2919534 C2 DE 2919534C2
Authority
DE
Germany
Prior art keywords
sleeve
bolt
brake
bore
bolt guide
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
DE2919534A
Other languages
German (de)
Other versions
DE2919534A1 (en
Inventor
Anthony C. Westland Mich. Evans
Kurt H. Ann Arbor Mich. Rinker
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ZF Active Safety US Inc
Original Assignee
Kelsey Hayes Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Kelsey Hayes Co filed Critical Kelsey Hayes Co
Publication of DE2919534A1 publication Critical patent/DE2919534A1/en
Application granted granted Critical
Publication of DE2919534C2 publication Critical patent/DE2919534C2/en
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D55/00—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes
    • F16D55/02—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members
    • F16D55/22—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members by clamping an axially-located rotating disc between movable braking members, e.g. movable brake discs or brake pads
    • F16D55/224—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members by clamping an axially-located rotating disc between movable braking members, e.g. movable brake discs or brake pads with a common actuating member for the braking members
    • F16D55/225—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members by clamping an axially-located rotating disc between movable braking members, e.g. movable brake discs or brake pads with a common actuating member for the braking members the braking members being brake pads
    • F16D55/226—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members by clamping an axially-located rotating disc between movable braking members, e.g. movable brake discs or brake pads with a common actuating member for the braking members the braking members being brake pads in which the common actuating member is moved axially, e.g. floating caliper disc brakes
    • F16D55/2265—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members by clamping an axially-located rotating disc between movable braking members, e.g. movable brake discs or brake pads with a common actuating member for the braking members the braking members being brake pads in which the common actuating member is moved axially, e.g. floating caliper disc brakes the axial movement being guided by one or more pins engaging bores in the brake support or the brake housing
    • F16D55/22655—Constructional details of guide pins
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D55/00—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes
    • F16D55/02—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members
    • F16D55/22—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members by clamping an axially-located rotating disc between movable braking members, e.g. movable brake discs or brake pads
    • F16D55/224—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members by clamping an axially-located rotating disc between movable braking members, e.g. movable brake discs or brake pads with a common actuating member for the braking members
    • F16D55/225—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members by clamping an axially-located rotating disc between movable braking members, e.g. movable brake discs or brake pads with a common actuating member for the braking members the braking members being brake pads
    • F16D55/226—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members by clamping an axially-located rotating disc between movable braking members, e.g. movable brake discs or brake pads with a common actuating member for the braking members the braking members being brake pads in which the common actuating member is moved axially, e.g. floating caliper disc brakes
    • F16D55/2265—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members by clamping an axially-located rotating disc between movable braking members, e.g. movable brake discs or brake pads with a common actuating member for the braking members the braking members being brake pads in which the common actuating member is moved axially, e.g. floating caliper disc brakes the axial movement being guided by one or more pins engaging bores in the brake support or the brake housing
    • F16D55/227—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members by clamping an axially-located rotating disc between movable braking members, e.g. movable brake discs or brake pads with a common actuating member for the braking members the braking members being brake pads in which the common actuating member is moved axially, e.g. floating caliper disc brakes the axial movement being guided by one or more pins engaging bores in the brake support or the brake housing by two or more pins
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D65/00—Parts or details
    • F16D65/02—Braking members; Mounting thereof
    • F16D65/04—Bands, shoes or pads; Pivots or supporting members therefor
    • F16D65/092—Bands, shoes or pads; Pivots or supporting members therefor for axially-engaging brakes, e.g. disc brakes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D65/00—Parts or details
    • F16D65/02—Braking members; Mounting thereof
    • F16D65/04—Bands, shoes or pads; Pivots or supporting members therefor
    • F16D65/092—Bands, shoes or pads; Pivots or supporting members therefor for axially-engaging brakes, e.g. disc brakes
    • F16D65/095—Pivots or supporting members therefor
    • F16D65/097—Resilient means interposed between pads and supporting members or other brake parts
    • F16D65/0973—Resilient means interposed between pads and supporting members or other brake parts not subjected to brake forces
    • F16D65/0974—Resilient means interposed between pads and supporting members or other brake parts not subjected to brake forces acting on or in the vicinity of the pad rim in a direction substantially transverse to the brake disc axis
    • F16D65/0975—Springs made from wire
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D65/00—Parts or details
    • F16D65/14—Actuating mechanisms for brakes; Means for initiating operation at a predetermined position
    • F16D65/16—Actuating mechanisms for brakes; Means for initiating operation at a predetermined position arranged in or on the brake
    • F16D65/18—Actuating mechanisms for brakes; Means for initiating operation at a predetermined position arranged in or on the brake adapted for drawing members together, e.g. for disc brakes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D55/00—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes
    • F16D2055/0004—Parts or details of disc brakes
    • F16D2055/0041—Resilient elements interposed directly between the actuating member and the brake support, e.g. anti-rattle springs
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D69/00—Friction linings; Attachment thereof; Selection of coacting friction substances or surfaces
    • F16D2069/004—Profiled friction surfaces, e.g. grooves, dimples
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D2121/00—Type of actuator operation force
    • F16D2121/02—Fluid pressure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D2125/00—Components of actuators
    • F16D2125/02—Fluid-pressure mechanisms
    • F16D2125/04—Cylinders
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D2127/00—Auxiliary mechanisms
    • F16D2127/02—Release mechanisms

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Braking Arrangements (AREA)

Description

Die Erfindung betrifft eine Bolzenführung nach dem Oberbegriff des Patentanspruchs 1.The invention relates to a bolt guide according to the preamble of patent claim 1.

Eine Bolzenführung dieser Gattung ist aus der DE-OS 25 48 927 bekannt. Bei dieser Bolzenführung erstreckt sich die Hülse auf beiden Seiten über die Bohrung des Schwimmsattels hinaus und ist auf dem Bolzen festgelegt. An beiden axialen Enden der elastischen Buchse ist jeweils eine Manschette angeformt, die auf der Außenseite der Hülse befestigt ist. Die beiden Manschetten dichten zwar die Gleitflächen zwischen der Hülse und der elastischen Buchse hermetisch ab; sie sind jedoch wegen ihrer ständigen Wechselbiegebeanspruchung gegen Beschädigungen anfällig und können insbesondere bei längerer Einwirkung hoher Temperaturen vorzeitig altern und dann brüchig werden.A bolt guide of this type is known from DE-OS 25 48 927. In this bolt guide, the sleeve extends beyond the bore of the floating caliper on both sides and is fixed to the bolt. A sleeve is formed on each of the two axial ends of the elastic bushing and is attached to the outside of the sleeve. The two sleeves hermetically seal the sliding surfaces between the sleeve and the elastic bushing; however, they are susceptible to damage due to their constant alternating bending stress and can age prematurely and then become brittle, particularly if exposed to high temperatures for a long time.

Der Erfindung liegt die Aufgabe zugrunde, bei einer Bolzenführung der im Oberbegriff des Patentanspruchs 1 angegebenen Gattung eine einfache, langlebige und funktionssichere Abdichtung der Gleitflächen zu schaffen.The invention is based on the object of creating a simple, durable and functionally reliable sealing of the sliding surfaces in a bolt guide of the type specified in the preamble of patent claim 1.

Diese Aufgabe wird durch die im Patentanspruch 1 gekennzeichnete Erfindung gelöst.This object is solved by the invention characterized in patent claim 1.

Vorteilhafte Ausgestaltungen der Erfindung sind in den Unteransprüchen angegeben.Advantageous embodiments of the invention are specified in the subclaims.

Aus der DE-OS 24 14 174 ist bereits eine Bolzenführung für eine Schwimmsattel-Teilbelag-Scheibenbremse bekannt, bei der in einer ringförmigen Ausnehmung einer elastischen Buchse eine relativ zum Bolzen gleitbare Hülse aufgenommen ist.From DE-OS 24 14 174 a bolt guide for a floating caliper partial pad disc brake is already known, in which a sleeve which can slide relative to the bolt is accommodated in an annular recess of an elastic bush.

Bei der erfindungsgemäß ausgebildeten Bolzenführung sorgen die axial beabstandeten ringförmigen Rippen, die zwischen sich die Ausnehmungen bilden, für eine Abdichtung und Sauberhaltung des Bolzens. Insbesondere wird zwischen Bolzen und Hülse eingedrungener Schmutz von den Ausnehmungen aufgenommen, so daß dieser Schmutz nicht zu den Gleitflächen im Bereich der Bohrung des Schwimmsattels gelangt. Diese Abdichtung der Gleitflächen wird erzielt, ohne daß es bei den im Betrieb auftretenden Axialverschiebungen des Schwimmsattels zu Materialverformungen der elastischen Hülse kommt. Die Gefahr einer Beschädigung oder eines Brüchigwerdens von Manschetten ist somit vermieden. Die erfindungsgemäße Lösung zeichnet sich daher durch große Lebensdauer und hohe Funktionssicherheit aus.In the bolt guide designed according to the invention, the axially spaced annular ribs, which form the recesses between them, ensure that the bolt is sealed and kept clean. In particular, dirt that has penetrated between the bolt and the sleeve is absorbed by the recesses so that this dirt does not reach the sliding surfaces in the area of the floating caliper's bore. This sealing of the sliding surfaces is achieved without the material of the elastic sleeve being deformed by the axial displacements of the floating caliper that occur during operation. The risk of damage or brittleness of the sleeves is thus avoided. The solution according to the invention is therefore characterized by a long service life and high functional reliability.

Anhand der Zeichnungen wird ein Ausführungsbeispiel der Erfindung erläutert. Es zeigenAn embodiment of the invention is explained with reference to the drawings. They show

Fig. 1 eine perspektivische Ansicht einer Schwimmsattel- Teilbelag-Scheibenbremse; Fig. 1 is a perspective view of a floating caliper partial pad disc brake;

Fig. 2 eine Explosionsdarstellung der tatsächlichen Bauteile der Scheibenbremse; Fig. 2 is an exploded view of the actual components of the disc brake;

Fig. 3 einen Querschnitt durch die Bolzenführung der Scheibenbremse; Fig. 3 a cross-section through the bolt guide of the disc brake;

Fig. 4 eine Explosionsdarstellung der Bolzenführung nach Fig. 3. Fig. 4 is an exploded view of the bolt guide according to Fig. 3.

Die in den Fig. 1-4 dargestellte Teilbelagscheibenbremse besteht aus einem U-förmigen Bremssattel 10, der auf Bolzen 15 verschiebbar gelagert ist, die an einer Bremsträgerplatte 11 befestigt sind, die ihrerseits mit festen Fahrzeugteilen verbunden ist. Der Bremssattel 10 hat einen außenseitigen Schenkel 13 und einen innenseitigen Schenkel 12, die über einen Steg 14 miteinander verbunden sind. Der innenseitige Schenkel 12 weist eine hydraulische Betätigungseinrichtung mit einem in einem Zylinder verschiebbaren Kolben 16 und einen Bremsbelagträger 18 mit einem innenseitigen Bremsbelag 20 auf. Der außenseitige Bremsbelagträger 22 mit seinem Bremsbelag 21 stützt sich dagegen an dem außenseitigen Schenkel 13 ab. Wird der Betätigungseinrichtung Druckmittel zugeführt, so gelangt der Bremsbelag 20 in Reibeingriff mit der Innenseite der Bremsscheibe 24, worauf der Bremssattel 10 auf den Bolzen 15 L und 15 R verschoben wird und damit den Bremsbelag 21 über den Bremsbelagträger 22 in Reibeingriff mit der Außenseite der Bremsscheibe 24 bringt.The spot-pad disc brake shown in Fig. 1-4 consists of a U-shaped brake calliper 10 , which is slidably mounted on bolts 15 , which are attached to a brake carrier plate 11 , which in turn is connected to fixed vehicle parts. The brake calliper 10 has an outer side leg 13 and an inner side leg 12 , which are connected to one another via a web 14. The inner side leg 12 has a hydraulic actuating device with a piston 16 that can be moved in a cylinder and a brake pad carrier 18 with an inner side brake pad 20. The outer side brake pad carrier 22 with its brake pad 21 , on the other hand, is supported on the outer side leg 13 . If pressure medium is supplied to the actuating device, the brake pad 20 comes into frictional engagement with the inside of the brake disc 24 , whereupon the brake calliper 10 is displaced onto the bolts 15 L and 15 R and thus brings the brake pad 21 via the brake pad carrier 22 into frictional engagement with the outside of the brake disc 24 .

Der Bremsträger 11 weist zwei sich axial und auswärts erstreckende Arme 26 L, 26 R auf, welche den Umfang der Bremsscheibe übergreifen und die sowohl den innenseitigen Bremsbelagträger 18 als auch den außenseitigen Bremsbelagträger 22 an Vorsprüngen 30 L, 30 R abstützen, welche in Nuten 32 L, 32 R des innenseitigen Bremsbelagträgers und die Nuten 33 L, 33 R des außenseitigen Bremsbelagträgers greifen. Somit werden alle Bremskräfte unmittelbar vom Bremsträger 11 aufgenommen, während der Bremssattel 10 in erster Linie zum Übertragen der Bremsbetätigungskräfte dient, ohne daß auf ihn ein Bremsmoment einwirkt.The brake carrier 11 has two axially and outwardly extending arms 26 L , 26 R which engage over the circumference of the brake disc and which support both the inner brake pad carrier 18 and the outer brake pad carrier 22 on projections 30 L , 30 R which engage in grooves 32 L , 32 R of the inner brake pad carrier and the grooves 33 L , 33 R of the outer brake pad carrier. All braking forces are thus absorbed directly by the brake carrier 11 , while the brake caliper 10 serves primarily to transmit the brake actuation forces without being subjected to a braking torque.

Der Bremssattel 10 ist auf den Bolzen 15 L, 15 R verschiebbar gelagert, die vorzugsweise mit dem Bremsträger 11 verschraubt sind. Die Bolzen 15 L, 15 R sind jeweils in einer in Fig. 4 dargestellten Buchse 40 aufgenommen, die sich durch entsprechende Bohrungen des innenseitigen Schenkels 12 im Bremssattel erstrecken.The brake calliper 10 is slidably mounted on the bolts 15 L , 15 R , which are preferably screwed to the brake carrier 11. The bolts 15 L , 15 R are each accommodated in a bushing 40 shown in Fig. 4, which extends through corresponding holes in the inner leg 12 in the brake calliper.

Dies ist im einzelnen in den Fig. 3, 4 dargestellt. Die Buchse 40 ist aus einem elastomeren Werkstoff wie Gummi hergestellt und umfaßt zwei Bereiche. Der in Fig. 3 dargestellte Bereich A zwischen dem außenseitigen Flansch 45 und dem innenseitigen Flansch 46 durchgreift die Bohrung 34 im Schenkel 12. Die Flansche 45, 46 halten die Buchse 40 in der Bohrung 34 fest und verhindern so eine axiale Verschiebung der Buchse. Innerhalb des Bereiches A der Buchse 40 liegt eine Hülse 50, die aus einem reibungsarmen Werkstoff (Teflon) oder einem anderen entsprechenden Kunststoff hergestellt ist. Die Hülse 50 dient als reibungsarmes Lager innerhalb der Buchse 40 und ist axial zwischen dem sich radial erstreckenden Abschnitt 49 des Flansches 45 und einer ringförmigen Ausnehmung 43 gehalten. Die innere zylindrische Fläche des Bereiches A der Buchse 40 ist mit von ringförmigen Rippen 42 gebildeten Ausnehmungen versehen, um ein radiales Verdrängen von Werkstoff beim Einsetzen des Bolzens 50 in die Hülse 50 zu gestatten. Die Hülse 50 ist mit einem Längsschlitz 51 versehen, um das Einsetzen in die Buchse 40 zu erleichtern. Der Bereich B der Buchse 40, der sich innenseitig vom Schenkel 12 erstreckt, ist mit mehreren, vorzugsweise drei ringförmigen Rippen 41 versehen, die einen kreisförmigen Querschnitt aufweisen.This is shown in detail in Fig. 3, 4. The bushing 40 is made of an elastomeric material such as rubber and comprises two areas. The area A shown in Fig. 3 between the outer flange 45 and the inner flange 46 passes through the bore 34 in the leg 12. The flanges 45, 46 hold the bushing 40 in the bore 34 and thus prevent axial displacement of the bushing. Within the region A of the bushing 40 lies a sleeve 50 which is made of a low-friction material (Teflon) or another corresponding plastic. The sleeve 50 serves as a low-friction bearing within the bushing 40 and is held axially between the radially extending portion 49 of the flange 45 and an annular recess 43. The inner cylindrical surface of the region A of the bushing 40 is provided with recesses formed by annular ribs 42 to allow radial displacement of material when the bolt 50 is inserted into the sleeve 50. The sleeve 50 is provided with a longitudinal slot 51 to facilitate insertion into the bushing 40. The region B of the bushing 40 which extends inside the leg 12 is provided with several, preferably three, annular ribs 41 which have a circular cross-section.

Für den Zusammenbau der Bremse wird der Bolzen 15 in die Buchse 40 von der Innenseite her eingesteckt, also zuerst durch den Bereich B, dann durch die Hülse 50, und er wird mit der Bremsträgerplatte 11 verschraubt oder in anderer Weise befestigt. Die ringförmige Ausnehmung 43 läßt dabei ein radiales Ausweichen der Hülse 50 in die Ausnehmung 43 zu und gestattet somit den Durchgang der Bolzen vor der Kante durch die Hülse 50, ohne daß die Hülse 50 von dem Bolzen 15 in der Buchse 40 weggeschoben wird und damit ihren Sitz innerhalb des Bereichs A verläßt. Nach dem Einstecken des Bolzens 50 in die Buchse 40 gelangen die Rippen 41 im Bereich B in Gleitberührung mit dem Bolzen 15 und werden wie in Fig. 3 gezeigt leicht komprimiert und deformiert.To assemble the brake, the bolt 15 is inserted into the bushing 40 from the inside, i.e. first through the area B , then through the sleeve 50 , and it is screwed or otherwise fastened to the brake carrier plate 11. The annular recess 43 allows the sleeve 50 to move radially into the recess 43 and thus permits the bolt to pass through the sleeve 50 in front of the edge without the sleeve 50 being pushed away from the bolt 15 in the bushing 40 and thus leaving its seat within the area A. After the bolt 50 has been inserted into the bushing 40 , the ribs 41 in the area B come into sliding contact with the bolt 15 and are slightly compressed and deformed as shown in Fig. 3.

Nach dem Zusammenbau kann nun der Bremssattel bei einer Bremsbetätigung axial auf den Bolzen 15 gleiten. Die Lippe 44 des Flansches 45 dient als Dichtung und verhindert den Eintritt von Schmutz oder anderen Verunreinigungen in die Buchse 40. Die ringförmigen Rippen 41, die an dem Bolzen 15 dichtungsartig anliegen, bilden ringförmige, als Schmutzkammern dienende Ausnehmungen 47, 48 und vermeiden den Eintritt von Schmutz und Verunreinigungen von der Innenseite in die Buchse 40. Somit wird der Bereich zwischen dem Bolzen 15 und der Hülse 50 im wesentlichen schmutzfrei gehalten.After assembly, the brake calliper can now slide axially onto the bolt 15 when the brake is applied. The lip 44 of the flange 45 serves as a seal and prevents dirt or other contaminants from entering the bushing 40. The annular ribs 41 , which rest against the bolt 15 in a seal-like manner, form annular recesses 47, 48 that serve as dirt chambers and prevent dirt and contaminants from entering the bushing 40 from the inside. The area between the bolt 15 and the sleeve 50 is thus kept essentially free of dirt.

Der von den Bolzen 15 L, 15 R auf der Innenseite des Bremsträgers 11 getragene Bremssattel 10 besitzt keine andere hauptsächliche Abstützung mehr. Der äußere Schenkel 13 erstreckt sich zwischen den Abstützkanten 30 L, 30 R und ist an diesen mittels senkrechter Anschläge 35, 36 abgestützt. Der Bremssattel 10 ist durch das Zusammenwirken der Anschläge 35, 36 mit den Abstützkanten 30 L, 30 R der Trägerplatte hauptsächlich an einer Bewegung in Umfangsrichtung gehindert, die möglicherweise von Bremsbackenreibkräften herrührt, die auf den Bremssattel 10 einwirken. An einer möglichen radialen oder vertikalen Bewegung ist der Bremssattel durch das Zusammenwirken einer waagerechten Anschlagfläche 37 und der Abstützkante 30 R gehindert.The brake calliper 10 , carried by the bolts 15 L , 15 R on the inside of the brake carrier 11, no longer has any other main support. The outer leg 13 extends between the support edges 30 L , 30 R and is supported on these by means of vertical stops 35, 36. The brake calliper 10 is mainly prevented from moving in the circumferential direction by the interaction of the stops 35 , 36 with the support edges 30 L , 30 R of the carrier plate, which may result from brake shoe friction forces acting on the brake calliper 10. The brake calliper is prevented from moving radially or vertically by the interaction of a horizontal stop surface 37 and the support edge 30 R.

Auf diese Weise ist der Bremssattel 10 abgestützt und kann sich axial frei auf den Bolzen 15 L, 15 R bewegen, die sich durch den innenseitigen Schenkel 12 erstrecken. Durch die an dem außenseitigen Schenkel 13 angeordneten Abstützflächen ist dagegen eine Bewegung vertikal und in Umfangsrichtung vermieden. Alle bei einer Bremsbetätigung auf den Bremssattel 10 einwirkenden Kräfte sind unmittelbar an dem Bremsträger 11 abgestützt und werden nicht über die Bolzen 15 L, 15 R abgeleitet.In this way, the brake calliper 10 is supported and can move freely axially on the bolts 15 L , 15 R which extend through the inner leg 12. On the other hand, the support surfaces arranged on the outer leg 13 prevent vertical and circumferential movement. All forces acting on the brake calliper 10 when the brake is applied are supported directly on the brake carrier 11 and are not diverted via the bolts 15 L , 15 R.

Claims (4)

1. Bolzenführung für eine Schwimmsattel-Teilbelag- Scheibenbremse für Kraftfahrzeuge, mit einer in einer Bohrung des Schwimmsattels angeordneten Hülse, die einen am Bremsträger festgelegten Bolzen wenigstens teilsweise umgreift, und mit einer zwischen der Hülse und der Bohrungswandung angeordneten elastischen Buchse, die mit endseitigen Ringflanschen an den Außenrändern der Bohrung axial festgelegt ist und am fahrzeuginnenseitigen Ende zur Abdichtung der Gleitflächen über die Bohrung hinaus verlängert ist, dadurch gekennzeichnet, daß die elastische Buchse (40) an beiden axialen Endseiten der Hülse (50) am Bolzen (15) dichtend anliegt, und daß das über die Bohrung (34) hinaus verlängerte Teil (Bereich B) der elastischen Buchse (40) innenseitig mehrere axial beabstandete, durch ringförmige Rippen (41) gebildete Ausnehmungen (47, 48) aufweist. 1. Bolt guide for a floating caliper partial pad disc brake for motor vehicles, with a sleeve arranged in a bore of the floating caliper, which at least partially surrounds a bolt fixed to the brake carrier, and with an elastic bushing arranged between the sleeve and the bore wall, which is axially fixed to the outer edges of the bore by means of end-side ring flanges and is extended beyond the bore at the end on the inside of the vehicle to seal the sliding surfaces, characterized in that the elastic bushing ( 40 ) rests sealingly on the bolt ( 15 ) on both axial end sides of the sleeve ( 50 ), and that the part of the elastic bushing ( 40 ) extended beyond the bore ( 34 ) (region B) has on the inside a plurality of axially spaced recesses ( 47, 48 ) formed by annular ribs ( 41 ). 2. Bolzenführung nach Anspruch 1, dadurch gekennzeichnet, daß die elastische Buchse (40) im Bereich der Bohrung (34) mit mehreren in Längsrichtung beabstandeten, an der Hülse ( 50) anliegenden, ringförmigen Rippen (42) versehen ist. 2. Bolt guide according to claim 1, characterized in that the elastic bushing ( 40 ) is provided in the region of the bore ( 34 ) with a plurality of annular ribs ( 42 ) spaced apart in the longitudinal direction and resting against the sleeve ( 50 ). 3. Bolzenführung nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die Hülse (50) längsgeschlitzt ist. 3. Bolt guide according to claim 1 or 2, characterized in that the sleeve ( 50 ) is longitudinally slotted. 4. Bolzenführung nach einem der Ansprüche 1-3, dadurch gekennzeichnet, daß die Hülse (50) in einer ringförmigen Ausnehmung der Buchse (40) relativ zum Bolzen (15) gleitbar aufgenommen ist. 4. Bolt guide according to one of claims 1-3, characterized in that the sleeve ( 50 ) is slidably received in an annular recess of the bushing ( 40 ) relative to the bolt ( 15 ).
DE2919534A 1978-08-01 1979-05-15 Bolt guide for a floating caliper partial pad disc brake Expired DE2919534C2 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US05/928,472 US4331221A (en) 1978-08-01 1978-08-01 Caliper disc brake guide and retention means

Publications (2)

Publication Number Publication Date
DE2919534A1 DE2919534A1 (en) 1980-02-21
DE2919534C2 true DE2919534C2 (en) 1987-03-12

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ID=25456275

Family Applications (1)

Application Number Title Priority Date Filing Date
DE2919534A Expired DE2919534C2 (en) 1978-08-01 1979-05-15 Bolt guide for a floating caliper partial pad disc brake

Country Status (9)

Country Link
US (1) US4331221A (en)
JP (1) JPS5544177A (en)
BR (1) BR7904537A (en)
CA (1) CA1165254A (en)
DE (1) DE2919534C2 (en)
FR (2) FR2432651A1 (en)
GB (1) GB2031537B (en)
IT (2) IT7930748V0 (en)
MX (1) MX148975A (en)

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Also Published As

Publication number Publication date
US4331221A (en) 1982-05-25
GB2031537B (en) 1982-10-20
FR2432651B1 (en) 1985-04-19
JPS61498B2 (en) 1986-01-09
FR2524095B1 (en) 1985-05-17
FR2524095A1 (en) 1983-09-30
GB2031537A (en) 1980-04-23
CA1165254A (en) 1984-04-10
IT7924795A0 (en) 1979-07-31
FR2432651A1 (en) 1980-02-29
BR7904537A (en) 1980-04-15
MX148975A (en) 1983-08-03
IT1207219B (en) 1989-05-17
JPS5544177A (en) 1980-03-28
DE2919534A1 (en) 1980-02-21
IT7930748V0 (en) 1979-07-31

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